ROHTAK, Nov. 11 -- Air quality has shown marginal improvement in some parts of Haryana following the sharp pollution spike after Diwali, but residents of several cities, particularly those falling in the National Capital Region (NCR), continue to breathe polluted air, with the Air Quality Index (AQI) remaining in the very poor and poor categories. According to the Central Pollution Control Board's (CPCB) air quality bulletin for Tuesday, five cities recorded very poor air quality, with AQI levels above 300. Kaithal reported the highest AQI of 336, followed by Gurugram (323), Sirsa (322), Hisar (316) and Kurukshetra (315). Another 15 cities remained in the poor category. Bahadurgarh recorded an AQI of 299, followed by Faridabad (290), Ambala (289), Manesar (284), Jind (276), Panipat (271), Charkhi Dadri (270), Fatehabad (242), Rohtak (235), Narnaul (228), Dharuhera (227), Palwal (226), Bhiwani (219), Sonipat (215) and Yamunanagar (205). The marginal improvement has provided little relief to residents as pollution levels continue to remain considerably above safe limits. The situation is particularly concerning in the NCR belt, where Gurugram, Faridabad, Bahadurgarh and Manesar continue to experience elevated pollution levels.htc...